[evlatests] Phase stability of ea27 {External}

[Dave Parker]

Hello,

Eddy Sanchez verified cabling at the L300 and L305, cables at the 
splitters and in the Utility rack. He did not see anything loose.

Dave

On 6/30/2023 11:48 AM, Rick Perley via evlatests wrote:
> Some support for a ratty connector:  In looking at my gain solutions, I 
> see that ea27 often has both ratty (variable) amplitudes and phases 
> within a scan.  No other antenna does this ...
> 
> On 6/30/23 11:44, Ken Sowinski wrote:
>> On Fri, 30 Jun 2023, Rob Long via evlatests wrote:
>>
>>> If we have a loose connection between the L300 and LO or DTS 
>>> splitters, something like this could occur. Do we see this effect in 
>>> both 8-bit and 3-bit?
>>
>> I think Rob has the right idea.  Given the pervasiveness it must be
>> at the head of the LO chain (L300 to L305) or the LO transmitter; or
>> The L302(s) not being phase stable with LO offsets.
>>
>> Tha latter can be ruled out by running a test with the Widar offset set
>> to zero.
>>
>> Ken
> 
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